FX has some big news this morning, and not just the renewal of “Justified” for a fifth season (although that’s reason to celebrate).

The network will launch a sister channel this fall, called FXX, leaning toward comedy and aiming for younger viewers. “It’s Always Sunny in Philadelphia,” “The League” and “Legit” will move to the new channel to aid the launch, along with “Totally Biased with W. Kamu Bell,” which will grow from weekly to a five-night-a week show.

FXX will launch Sept. 2 while the Fox Movie Channel will expand as FXM, focused on limited run series. FXM begins with a 10-episode adaptation of “Fargo” with the Coen brothers on board as executive producers.

This is the second major expansion announced by the News Corp. in a month; Fox Sports 1 is due to launch this summer.

More cable channel rebranding…Fox plans to go head-to-head with Disney’s ESPN with its new Fox Sports 1, the remake of Speed TV due in August, in the same way that NBC changed Versus into the NBC Sports Network early this year.

It all amounts to new challenges to the longtime leader in cable sportscasting, ESPN. What will FS1 have that ESPN doesn’t have? Regis Philbin as a host. Also look for Major League Baseball games on FS1.

According to The New York Times, Fox Sports 1 plans to carry NASCAR races, MLB games, college basketball and football games, soccer matches, and UFC fights.

Joanne Ostrow has been watching TV since before "reality" required quotation marks. "Hill Street Blues" was life-changing. If Dickens, Twain or Agatha Christie were alive today, they'd be writing for television. And proud of it.